LIST OF ILLUSTRATIONS 



1. Forms of Dipterous Antennas, enlarged but not to scale . 34 



2. Head of female Culex, x 1 5 (the head itself being squashed 



flat appears too large) ...... 35 



3. Head of Blow-fly {Calliphora), x 8 . . . . .36 



4. Thorax of a Tsetse-fly {Glossina fused), x 10 . . . 36 

 5 Wing of a Common House-fly, x 14 . . . .38 



6. Wing of a Gadfly (7«i5a«Kj), x 8 . . . -39 



7. Wing of a Mosquito (Czi!/^^), x 15 . . . .40 



8. Longitudinal vertical section of a Mosquito {Culex fatigans), 



X 10 . . . . . . . .41 



9. Blow-fly {Calliphora), emerging from pupal case, x 5 .43 



10. Head of a Muscoid Fly to show frontal lunula and suture, x 8 43 



1 1. Head of a male Culex, x 14 . . . . .49 



12. "L^xva. oi Stegomyia fasciata, x 12 . . . . 51 



13. "Lsxyz. oi 2js\ Anopheles, x 12 . . . . .51 



14. Head of a Larval Mosquito of the ^(/i?j group, x 25 .52 



15. Head of a larval Megalorrhine Mosquito, x 15 . .52 



16. Pupa of a C«/f:r, x 14 . . . . . .54 



17. Front and hind ends of a larva of Cor^Z/^nz, x 9 . .60 



18. 'L^iXvdL oi Mochlonyx, x 12 . . . . .61 



19. Examples of scales of Mosquitoes, enlarged but not to scale . 62 



20. Stegomyia fasciata, x 6| . . . . . 109 



2 1. Last two abdominal segments of larva of Stegomyia fasciata, 



X 24 . . . . . . • .III 



22. Wing of a Psychodid Fly (PewoOTa), x 24 . . .116 



23. Male genitalia of P^/ifi5ijA7;««j, x 75 . . . .116 



24. ¥exaa\& oia. Phlebotomus, x 30 . . . .117 



25. Gravid abdomen of a female of a P^/^^iJ/f^^z^j, x 60 . . 117 



26. Young larva of a Phlebotomus, copied from Newstead, much 



enlarged . . . . . . .117 



27. Front and hind ends of a larva of a C^zV»«w;2Mj, x 9 . 121 



28. Female of a C«/zVotVi?j, x 22 . . . . .122 



29. Simulium nigrogilvum, female, x 16 . . . .123 



30. Head of a female Simulium, x 40 (the head itself being 



squashed flat appears too large) . . . . 1 24 



